You can quickly ruin a relaxing beach day by stepping on a marine animal washed up on shore. Watch out for these creatures if ...

A “highly venomous” sea snake that’s “potentially lethal to humans” was found on a popular surf beach in Hawaii in a rare ...

Sure, these creatures can be dangerous, but remember, they’re not the villains of the sea – they’re just surviving, using ...

Has a 4-foot bell body and 30-foot tentacles, creating a surreal and rare deep-sea sight. Jellyfish with stinging tentacles and bioluminescent abilities, glowing in the dark underwater. Colorful sea ...

Evidence of that fact is everywhere, from bleached coral reefs to damaged food supplies, and now it might also be pushing venomous sea creatures like the yellow-bellied sea snake farther north ...

A live three-foot yellow-bellied venomous sea snake washed ashore Honoli’i Beach in Hawaii last week. Officials have since ...

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

Some people try to keep slow lorises as pets because of their cute appearance, but handling them can be dangerous. The blue-ringed octopus is a tiny sea creature that looks beautiful and harmless.